Heating attachment for lamp-chimneys



(No Model.)

W. F. FINGER HEATING ATTACHMENT FOR LAMP OHIMNEYS.

' No. 448,950. Patented Mar. 24, 1891.

FFICE.

IVILLIAM F. FINGER, OF TRENTON, NEIV .IERSEY.

HEATING ATTACHMENT FOR LAMP-CHIMNEYS.

SPECIFICATION forming part of Letters Patent No. 448,950, dated March 24, 1891.

Application filed August 4, 1890. Serial No. 360,942. (No model.)

To all whom it may concern:

Be it known that 1, WILLIAM F. FINGER, a citizen of the United States, residing at Trenton, in the county of Mercer and State of New Jersey, have invented certain new and useful Improvements in Heating Attachments for Lamp-Chimneys, of which the following is a full, clear, and exact description.

My invention relates to the class of heater attachments which are -made of wire and adapted to pass. down within an ordinary lamp-chimney, engaging on the inside of the chimney with an elastic pressure, and so formed on top as to support a cup or other vessel and to avoid obstructing the passage of air out through the top of the chimney.

My invention consists of a heater attachment of the class above referred to, formed from a single continuous piece of wire with a flat and preferably square top in two sections, from the inner sides of which the wire is bent downward to the proper distance and then horizontally to rest 011 top of the chimney, and thence downward in two loops forming straight legs which. diverge downward in such a manner as to engage throughout their length with the inside of the ordinary taper ing lamp-ehimney with an easy pressure, avoiding excessive pressure at the ends or at any point.

In order that my invention may be fully understood, I will now proceed to describe the same with reference to the accompanying drawings, forming part of this specification.

In said drawings, Figure I is a perspective View of my heater attachment in position in a lamp-chimney. Fig. II is a side elevation showing the form of the straight diverging legs. Fig. III is'a plan View.

The attachment is made, as above stated, from a single or continuous piece of wire. The top 1 is of course horizontal, and has preferably the square form shown in Figs. I and III, being made in two sections, with a space 2 between, affording lateral elasticity to the attachment, the halves of the top being for this purpose entirely disconnected. From the inner corners of the top sections 1 the wires are bent at right angles, extending horizontally outward, as shown at 3 3, thence at right angles downward, as at 4;, to a sufficient distance to provide the necessary space between the top of the lamp-chimney and the bottom of the cup or other vessel, thence inward, as shown at 5, to provide a horizontal shoulder to rest on the top of the chimney, thence at an acute angle 6 to form two elastic divergent loops 7, which constitute the legs of the attachment and engage by an easy outward pressure within the lamp-chimney, resting uniformly throughout their length, as illustrated in Fig. I, so as to prevent excessive pressure at the ends or at any particular point.

The advantages of my invention as compared withother devices for the same purpose and bearing some resemblance to it in construction are the following: It is made of a single piece of wire, resulting in superior simplicity and economy. The elasticity of the legs and the lateral elasticity of the top, by reason of the disconnection of the halves thereof, alford perfect elasticity in every direction. When in use the pressure is even y distributed from end to end of the elastic legs, and hence there is no danger of breaking the chimney either when the device is in use or if left in the chimney when not in use. The legs being straight from the horizontal offset or bearing 5 between their lower extremities adapt them, as before stated, to produce an equal pressure throughout their length against the converging inner surface of the common lamp-chimney, thus distinguishing the device from such as press against the lamp-chimney, particularly at and near the ends of the legs.

The device is strong, durable, adapted to any size or style of chimney, and made of a single wire, the particular shape represented being of especial value for insuring equal and moderate pressure against the glass and avoiding special stress or pressure at any point.

Having thus described my invention, what .I claim as new therein, and desire to secure by Letters Patent, is-

The lamp-chimney heater attachment here in describcd, formed of a single or continuous wire with a flat top in two disconnected parts 1 1, horizontal offsets 5 to rest on top of the chimney, and straight diverging elastic legs 7, adapted tobear from end to end with outward pressure against the inner surface of the chimney.

\VILLIAM F. FINGER. Witnesses:

O. L. ASHMORE, JAs. G. Haves. 

